Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f4a746b864088633886a4694d7de1a67b8df052cc9e52c28a4138d52d7ae1594' 
  AND token = 'bP82qvoC9FBh2dazLFXIMDb8Kh9LDGf3fQAvc3aCcyw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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