Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a1c136be41ca656f9b900d0d793e892160b9d1022587ae95d4597f6696f8ebb7' 
  AND token = 'jgyRfqUA1RaD9buxE+Fkfjk5/ov6KapdB2Z87CyrQ5U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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