Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4faef584fcbf283cd029597d7e7c483df20fb283e6c4f4363d05052ce9a18665' 
  AND token = 'qaJmUYXTOc0lo8vMWHocaJ0dlz0DBGFp8422oksHxA4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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