SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd337ef89b6abe0653046b81872a40e920c140958d5194efe9c53522b9a1d1d01' 
  AND token = 'CiXCzObvN/xV15qQJ8Jv7V6isRsAHyPU4pBK2N6h8+A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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