Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b41c4ee0aedd5eb58c474f0c007911fcbdebef055ad922fa7bf68ee45c888154' 
  AND token = 'ZHlBDDKNpAvtTZqQO6VyS/Wa5sIZk1ytcXgc5jVXJW4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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