Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '763b572d6f320f5d69eaad746de823d1e44fce54e6a67c88f25387ca71ebc97a' 
  AND token = 'EMoe56a0aPMnVKpbglEmqkFAub+FjunfXMzq4Ga8O2A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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