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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '41327afe34b5f670f4a7b9c58b0ed05cd4872f5f335bf89d922a99a9e25a0c77' 
  AND token = 'yvHWhxXIIAJdFBUo/DBBFUfvLzd89edRANnNeFAQgJI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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