Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '098fa4c9f65898d7a8f5e6138d5a4f2944e9b82f6953006a95d294e12e2f3141' 
  AND token = 'v06zHbEI3lRaUUcthRcH6d2MZACC/6ll+LvUSrrxgeo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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