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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2e1bae204169c493013f54c8f68300b2f17cabcc51d4e6a7f8b071d75684c1b5' 
  AND token = 'UE5tKIIZSD6U8fD+ATod0g4PJONgh3m8iqddkUUfiE8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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