Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'e6cace744b624f1d4af07e20f38ed92b3638c8f559a39354d456fa080810e38c' 
  AND token = 'hdMPvZGPaUOEP5GeOu72GUxvwpGjFXZOswQIHXyreM0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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