Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7e971306ac7bea846799bc3c6a6dca5acdfe19021b365a54faab785e35e2318d' 
  AND token = 'Ev/Ld3Sntk9jU5bL2Q3acGJatPHxoK/uObemw7XdFgU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}