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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ea2a9fe177cf55700c8b63bb9eacb96b8d7d60b2b7ea5f057a6b0f1f7a7a2d0c' 
  AND token = '1vFxjkycEzJLgj+7rhLXo8iucEF8Idt1bbljQmcz+5Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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