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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '17059f2adae940d677d375e9806c195f5f33f96dbea6ed2a633b204844883c9b' 
  AND token = 'k6ZojmxsOxurLh/hsy420JaGNFid83Xnn5cTqPkUC6E=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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