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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '29151d5e24dc72ba4bfdcb6f37862921d9833e80557225c3a8b75a1435c7b316' 
  AND token = 'Y5jvyWcAI763Kk8aUVTWSfZJYG7HMYoblwsNXk0VRS4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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