Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '94d762a8cdaa63ef87389ed0811a982f150d872422a6e452d023314eb6c2a6b4' 
  AND token = 'ZoaiU5ljKwJEGuwaJCU60N5m+O6nYtQcPaqTMAxiazg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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