Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd864f27e50543f6b2d1b2082dfe6462624a2610e086b7b3b0c4f1d0c6123d1e9' 
  AND token = 'FWIEL+HCfGeuaDx2epOyDcBGkrO41ti4PjSbDAVVHlE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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