Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '5d7c22e970531736af3926180024bab9791dd5cc63c99d60b2bf4e567216aecf' 
  AND token = '8pwkR4rmwaJP3V4ZqJjxfJ10sN5j3CFaNJz4p5qeJGA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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