Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'd85b27f6a5e43fb13b58289f6fa12f473eb39429d67688c968187db05d47a820' 
  AND token = 'Vb3LaVo9/btW0hAVSAiveNaTIRG8sHExlZOuJfe6hZQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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