Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3295ac4fa24055a85c55e8355a379b9309af51c25dd12e54ebb7884bbffd71be' 
  AND token = 'swY6fJKJ2Ay8p69M2G2G4DJN0P5bKEwZcdcpVme9Eho=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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