Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f81b3e548a752e8a0e53d856b7921b99448e015ab64e73a04833416aea7c00cc' 
  AND token = 'NMhbvKa39nf8jsLz1r+K4Co9NV43hOZTuK5aJw1yf7A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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