Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f2c3cc7c87889fac4979f1eda4b74f31bbda301ae0854de2192375a14d5847e' 
  AND token = '+4AZXoAO8ZafbWoD6CoWwqKpTOi784McxW02PZvcf68=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00062

JSON explain

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