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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '005b2619d06b5a4e568ac7b3a2e07c8633b5237149d4d1e2a9c7db2f0a3fa02e' 
  AND token = 'ALtKBtM6G5Puggkdz6Q1Tn/qRoHG1e8wocCGfIQ1XL0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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