Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bd4fcd180c38ada5899c66e421f0139d07a45d6758783ad7695326c28f4094be' 
  AND token = 'H1w+njC396TOp2BXFkl3cc9+0HGDxQlK4961lEyoo+s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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