Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2f09072f113ee08b1a039b3219568af880e892e0995384dc67311bf249ab7773' 
  AND token = 'FG7p8bHmI/AvUqGMAPqPkdRiaJEZlr2cTF+R4dwqD/Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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