Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2a19a180fc4888727390f2d2444b6d6615c37530a05bccc22ac224b9246343c6' 
  AND token = '0J+p1/tx+y2bgi8A73SHH/vyR6kBwKmKkgy/n1YiWFE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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