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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '80e6352963697751643834b178e5ea6e31e495ae8b4b797823ce22a0b199045d' 
  AND token = 'DWH/f5iNXljYNWNI6uUdDJXLtuOWoFDEK467R6cM6Oo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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