Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'de053376a158fd09bdf9716f6591a8cac3cc1a235f4367660d79e82b0b45754e' 
  AND token = 'Qm9ymXQ0+e9vZ1tixympjnHCe+jquE27tFGR2d1k4dQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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