Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ff92ec2e95be00cd2ce8d0505d7660836dd5382c0de80a7054a62e2187429036' 
  AND token = 'bWSIOwAuBVzJG3Urajj1Khjt03lwr0DqahxQ5jAOSko=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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