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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'e59692e0ba85e344cfc2f5eb11bc71c03e4209d2e56028b6c21db048332e7105' 
  AND token = 'a76Vree8kXX6Nwo8H7BassmYt3FFFqi4KDkmoZ1lZIY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00007

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}