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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '0d7324b65b006915ae59480d7ef36c079bc3116ead9bc7a0655e7df1b068d7d2' 
  AND token = 'gvxt2zlSVWbs6ILMYAoKMipsSX0X5GGyhOM060payyc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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