Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e472fb6f41a0eb991777d5e2fbcaed995c5560d8ee1650ed7606eac0c11ae5b4' 
  AND token = 'YrN+5HaC+O9EK3SwfJTutlbjc4FGQnGURfXiGoUULtk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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