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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '869b75031a22b75f2b8a3788d7b23d7ad0435930c94519250d76bef58c12fc45' 
  AND token = '4T6VyCqh2+Vw3c38TtWYZO+ikyzAP4QUL45P1ibYtyw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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