Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '78c0f9d42982cff16fd7ac4def99d3335630d13ac6058ed6595593ea56b96f8a' 
  AND token = 'I/VA2ocShIie+esjjBLcVoEnirwv5azwATw5NhJKqwk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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