Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd2005c43ad1adee9494988f4e3ebe61566185aa2b2bb0436cd62cddd906fb150' 
  AND token = 'vG3o1+yPMZlbO48ia/eERtXs/3PSRexDgjD4f3eScBA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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