Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '74cc3eec31a719aab5b8889acc1eefc9d25d25f2df8c58e9b9de059652da5953' 
  AND token = 'PdGbMa2Otpu9QNOR7k6oAddxYWHahtYJngfQrnuZs/o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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