Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '71a2080ab29545b05277a161f6401d0f52ba5daf03959cf0f3adfb4b78217edc' 
  AND token = 'v/jJeBABvUrF006U8MxZvMiectE69ZO5jEirdwlqG1w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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