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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '66bdde36faf1341673006fdfb68c9bf9887c8e69e339a228ad6e76c161033aa4' 
  AND token = 'rLHrENAGIcJj0Y1LdWfkL/YoqXPDagxauobkPS/EEOU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00093

JSON explain

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