Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6b8ca163583abfad1c383062950de4a09a9512db195a3bc296d5dc695b937458' 
  AND token = 'lkkXu+TSc8NH1vAgNRXhIeVnk9AUWC+cgceaft+3Pls=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00138

JSON explain

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