Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5e5ded3a7e5d98873eed7e6253d3977094bfab7d059cfbb706734253fbb46e70' 
  AND token = 'BTM9SR9Cft9N3SOoNENsY3M3108dFBSumZPaHOJZ0i0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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