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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9365e1e8294ddd33c1fd16cefad62e6bf3ef61af250e88d32e57fa61c002f666' 
  AND token = '/iCsz1f/QFmKvuudAMXg3h90sqaHy/uEIQKnU5+iKCY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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