Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '221fc764eeb17d92f2d1259820505d90fb87631d076917138d748f97e9ee3ecd' 
  AND token = 'o+IsAP3acscSEhbITkebYP+GM1Ik6/WlqhRQenhyqfE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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