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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '3ee57733925db28c4a7d400374c60609c4e2c353136cdf3de657e1b861462790' 
  AND token = 'CdXIBLOBiJlHrlyoGI0SRfamoPPWVKVKGQx1u6wmWLA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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