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SELECT 
  1 
FROM 
  vi_lock_keys 
WHERE 
  key_id = '8e1d501334f04df46b3896092f37a9dfe285c29a1c277efe0119a421c0312e57' 
  AND token = 'qH0hfJgDgiXbh/hoNCixMpAt/UrsM5+ONMSmSQ8c7Rc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00010

JSON explain

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