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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'b2a338a991eb8306a7cfa64966e20954d9b59efd2d65cacec61d1ac3ca523fb0' 
  AND token = 'xJaXjM9qdyox9VXnaln/7E8jXCW4NJWiB80G7Ptz1CM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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