Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e3d4faae57ce0de164e2addf670b9347dc797472d051d4ddcc92a94a42459db9' 
  AND token = 'AKlG6cm/r49jwPi90IU3b2d+Y0BdrU/Ieb+hbd+qZZY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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