Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'fe82c217638130da2d7c2c9e3f186c1232849372c5918ef59f508c76fef84b5b' 
  AND token = 'NvfzB3bhgSXAgmgQQg8abuwDxO0dEcDUpbj1AN8Gc4Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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