Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1b6f216f438fdd38b13687fc3e5a7f9c6ff2bf6929ebc1a6b2911e1170dacfcc' 
  AND token = 'bGed4opJO1NW5zHbBrhCYEsig0uuF5UX6uX49I+N9vs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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