Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '5874274fdbb45cfbdcbf75e99a4aea653292c7b4401901b7830515570d242a0d' 
  AND token = 'pkZBuQBjDyr4/F0uQQdR6mW2ztRTR4hes4Qrh527EoM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00052

JSON explain

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