Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'abecc70554935a668e7686ca999fedcd8acdc1fbb28e5793ac0b42dfd131171b' 
  AND token = '7Mk6LkhwDjMPbVCmkiFV4mx7KzCVfJ8G+hWIIEOOlmM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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