Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6bf1421f560e0e53e572b67f268348b4f53f06126be5347fbd754163b5ce2b6f' 
  AND token = 'lVbWYyhOwpzaPwugTl2sD6M7r1Js9y1fQjJnIF4TNzc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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