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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '3aae26c2645be14a21c60bbe06a460bc2acadfa7416682387769a53a591da1b0' 
  AND token = 'u9fa6NVT5AhbOZD2XWMQrh0eEgDyt9FCzaptlx3G5+w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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