Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'ce165943ff026ffae3ac940f44692347afe562d84534921fa94340b11cba578c' 
  AND token = 'LyixBR/pd4cHrOX/VJR3W3Nd1Wpg7xjRofCskkJ3s9k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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