Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba3b7adc5ede0d85f5fb1c6c9b09bd904b4947d546c108979cd78eb7a0193555' 
  AND token = 'lG94JOGqhc7WSl0V3SVeC7Uvypo6GN0FQaXpxyyXIc8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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