Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '72ca6969fe197c8c60d60ce5c3c435990f2d14fb7a77ad37d2dfdee4c48cc27d' 
  AND token = '9pxsXIB0piMYmuzyQ6r5VeuqvPEVEkNaW9hhL6TQ4KY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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