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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = 'edecf6750b4ea98996156d44daff8b47eb5eff769ed99ab9ea5bbc2f79a9c2f3' 
  AND token = 'vLM26sAmSNQbp0k3vQnl6rTfCAl5GuL0Zt6PDSaeAtk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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