Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8d3958634644a13c1a98d599cac1f9adf0a1fcbddd87e1ba08e81cbb52cf536e' 
  AND token = 'hlrOacBmUX+kyYPvlAu2SyoRVPdEKOThqMT2SZ2v2UM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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