Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ddada29578d0275433bc4a4f1ab1a6ed09c112fffe66610e2024c16938d34728' 
  AND token = 'jREI2EUHn0gqwd4y5IIKi3yyCUiaAedWBzXT5DNxono=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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