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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = 'b17295b1bc9c0dd5180bd946cf938ce960d918fb5879c766688d82d360b4e8c9' 
  AND token = 'XYQJkZ7g/FzdyI0B2/4zn9kcSVSVEWRJ9G0gsy8suIM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00009

JSON explain

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