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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '038db447f0d72b21eb26c4afd5832666cd5027ad075dfd065eb9e73aa41756d4' 
  AND token = 'zGulwlskyZpAr7YKN0iQu3aQ7k+CxIfl0lKUU5w8Ogc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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