Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd91c0d6ed890a0cd51c8ec4425743a8435877c27f8a28ff34643734152f19f1d' 
  AND token = 'V82sPLNRDRkEV+ghjFTfb885iihoSnWAGkzl3eGP2Jo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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