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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'b705258912780caa93d205d593517b97e9723ba9cf01090bca42e0e15964d920' 
  AND token = 'W8iTsN1hahKqTOAISZJVUSS6ZIwdTaLBso2NLjao/NY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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