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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '085101556e8dd8062de6e9bf222bbda2c06e8d5be8ba9b50fc1968f3f8eb233d' 
  AND token = 'dXGvnFdWvwYUZLVejivWYNrU58EB3/Wep4dVvwSNSNk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00150

JSON explain

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