Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7f3f5383e7660101d44179c2000ba631096883a458de3d74e807c552151cc66c' 
  AND token = 'o8iN3yeCuJDJnCPpMKW6Qs0Bx0gFQYVRoyn4HojT1Ns=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00058

JSON explain

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