SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'ba9c45143652f1430f410d7a169f6a6af7311dcced918d4b6e95e183d0905e29' 
  AND token = 'm+IJ+Wi6f4ilFOYILJZp9fDgwWxuKfMBDBW/dOTteUs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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