Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c4858e5deebcb5e69226160903434abeb02d62846382caccca1f5b65df997160' 
  AND token = '4r5VSE00Q93hE2J4YPVrWvyb4WmTcgpda0PfkEgjS6s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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