Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '69c69fcb0122bf76501a138ff5e3ecbdfe65720df6276f42a5725a496a3ab568' 
  AND token = '1sHxunaEdUYH0WWm2xxY+yJH3CmrnWseQqQNljMTzhQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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