Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'a5a8579d8e273b9b1765a99443e95115e8e4db615627f2e2a1120c267fc3e5e0' 
  AND token = 'aDHksxCJbalU3KSBLlnPSielIP+0sOZS2DWU3jwE9lM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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