Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '218526092df95fd31a071999ce0bbde5d950808af68737b930f7534c75e6e74b' 
  AND token = 'EGUxrRwSVnLN3SYfjg/AKVUNsQf/3+/CarC91tbVVCo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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