Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bffeed5839489f5f28af738d9c1ffd6606d74a528e0e4d958e30b38853a77622' 
  AND token = 'ZOy+16qWDeFb08pkPDhYLNJAtFfMm5FRGm6U7x1spDc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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