Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0360f093b398a7f7fe2c4375e1dca08767644b414ca496b51a3438bf3097fc93' 
  AND token = 'KCyz75das9SaeKBcObwVNnjPyZuS8gaVYg1aecLlCpA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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