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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '0bf70abca7f32fe37c2e26fadbc1c59e52ecba3c11d9eea948ed44f13cd0734b' 
  AND token = 'kNkiZ2djq3fk1vGBCJ9c727Oec6pC2peqtkHrE2OGs8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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