Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f205bd9319bab900299d2820bd01d4d71e073827a8a39eb210fe73d69c599f5d' 
  AND token = 'BKBVS3F9crSyEy3xNMxx4JNmTwoqAJmcwCx4uZ4UCBw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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