Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bbe57523a6cc56af10753d5e4dcb764f943dc7a062a8102d544287dcad520cef' 
  AND token = '43wz3FhJE5P8+B4mclK/u7S3zZFwFCPm0sh46Q1EgUg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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