Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '672a4666648f4d627140407f347c1032a26aad18dd86939531d73629bfa0e3ac' 
  AND token = 'aqenu6HVP5FNOt15/uXiV7OQSFThlqemsFDpaK5V6mo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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