Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '37118ee4c8d108990cd7e34094d911d55cb058db644faf1085aed08417dc8195' 
  AND token = 'QOgegf+YcdiX95Dx147BL9+RURMQ5lKCLGq+bUyPQNg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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