Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1efff188b1ce33bfcda7d6e0c9626643ac696e24ebba05ef5f9798c56446c5f9' 
  AND token = 'DUJXEf6w/XlCKHWKmegP4FQhSHS9ewdIMlllyd2rn54=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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