Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3053420b75b4f8f40f5e87c382fbadb41b7cdd11807e0d37d940c4201cdffd81' 
  AND token = 'yW70Sp3dydVFmwRDSrB4aOGv7ied4T0hZ/6gIzTXJx8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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