Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f398cae118b1bcbe0000791e71414623074ed42623541ccba32a938497490c5e' 
  AND token = 'riEF4mCEEh2Yn1idFpSEOaqPh8ZHnQlzx2uyDp60J6I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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