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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0d8041bef04d42b300c4791c5a595060da2d1f6393015c43ceb60949152b1111' 
  AND token = 'P+tH4u8pZWaGNqx6MHnIaLP0UnSMsYnH14BvgvkSX8s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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