Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '384f2b76429fb88cbfbace234eeb33033775265d4e6d02f1f407402837e28915' 
  AND token = 'Lw207QdoWKK7opCXFTUJEA5JLAOWHN2BOdBEkcxt1LM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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