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SELECT 
  1 
FROM 
  q_lock_keys 
WHERE 
  key_id = '95f3b75c52c705cd64acd8ad85c4ab0bb6a9bd781937160fc1852821434eb57c' 
  AND token = 'buCYxpg5yospF173POMYlayx+9JlMH5A5jBWq4MBgl4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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