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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '2ef5a108c116b837efac03587e96a056509b555cbcd04987cd10804aa0753974' 
  AND token = 'uKDtRdeDWulaRd8MQk7uW9U9DC8XUvCeh/WvTuz4494=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00105

JSON explain

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