Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '41abce894a4ad616afad8a8ced8a3b5d84c62387f69557f1b578a7b6fde82d87' 
  AND token = 'z3/LMEEpHfAICRq2NxoCnH4Xf9ME90wKFxnLqku4RTk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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